Pump



Dec. ll 1923.

w. H. HITCHCOCK PUMP Filed May 25 1922 2 Sheets-Sheet 1 Patented Bec. 1l, 1923.

WILLIAM H. HIICIICOCK, OF GAINESVILLE, GEORGIA.

PUMP.

Application led May 25, 1922. Serial No. 563,605.

To all whom/t may concer/ro.' Be it known th t I, TvVILLrAM H. Hironooon, a citizen of the United States, residing' at Gainesville, in the county of Hall vand State of Georgia, have invented a newfand useful Pump, ot which the -following is 'a specification.

This invention relates to pump constructions, the primary object- Vof the invention being to provide `a structure which will increase the pressure during the discharge stroke of the piston.

Another object of the invention is to provide an arrangement of levers Awhich will aecomplish the operation or" the piston with the minimum amount of power.

A still further object of the invention vis to eliminate the usual knuckle joint between the piston rod and piston mounted at one end thereof, thereby increasing the strength of the structure. v

With the foregoing and other objects in view whichwill appear` as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention .herein disclosed,` may be made within theA scope of what is claimed, without departing from the spirit of the invention. Referring to the drawings:

Figure 1 is :ir-longitudinalsectional view through a device constructed in accordance with the present invention. Y

VFigure 2 isa sectional viewV taken on line 2--2 of Figure 4.

Figure is a sectional view 3-3 of Figure 4.

Figure lis a plan View of the device.

.Referring to the drawings in detail, the device embodies a supporting frame including spaced end bars 5 and 6 disposed at one end of the supporting frame and a bar 7 disposed at the opposite end of the supporting frame. y

Guide bars 8 and 9 arer arranged in pairs, and disposed substantially intermediate the side edges of the trame, providing guides for. the movable block 10 which hasconnection with the piston rods 11 forming parts of ythe pump structure.

taken on line Having connection' with the end bars 5' 6 and 7, are the spaced side bars l2 which are Jformed with offset por-tions to provide clearances for the cylinders 13 which are mounted in the collars 14 that in turn carry pivots A15. These pivots l5 are mounted in suitable bearings formed in the side bars 12, so that the cylinders 13 may pivot freely between the side bars.

The movable'block 10 is provided with lateral ears 16 to which the piston rods 1l are pivotally connected, the piston rodsli being connected with the pistons 17 to move therewith. A discharge pipe indicated at 18 is supported by the :trame and is incommuni'cation with the cylinders 13 as through the flexible pipes 19 as clearly shown by Figure 4 of the drawings, sothat as the cylinders move. under the action et the pis-V tons, the flexible pipes 19 will also move to compensate for such movement of the cylinders. Y I

Having connection with the movable block l0 is an operating rod 2O which may be operated by any suitable source 'of power to accomplish the reciprocation of the block 10 and piston rods l1.

In the form of the invention as illustrated, the device is preferably used for compressing air, it being understood that the pipe 18 is in communication with a suitable tank not shown.

Having thus described the what is claimed as new is In a device of the invention,

inders pivotally supported between the side bars. guide bars formi-ng a part of the frame, a movable block y the guide bars, tion with the guide block and having pistons operating in theV cylinders, means for moving the block along the guide bars to move the pistons within their cylinders, and dexible pipes having connection with the cylinders for directing air'itorced through the cylinders., to a. dischargevpipe. y

In testimony that I claim the foregoing as my own, I have hereto aliixed my signature in the presence of two witnesses.

` v WILLIAM H. HITCHGQCK. Witnesses:

C. E. SMITH, R; W; Sima:

character described, a frame, said frame including side bars, cyladapted to operate between' piston rods having connec' 

